"Ms. Murines?" one of the kids asked, her skirt lifted up by her morning wood and her head tilting in wonder. This also established another form of the cascade as females no longer existed yet the feminine addresses still remained. "Why don't you have clothes on?"
Ms. Murines looked confused before looking down, her inattention to her earlier actions causing her to be surprised when she saw her middle school femboi body was indeed bare.
"Hmm... Why am I naked...?" she wondered to herself, seeing no issue with the fact she was naked. "...Oh! That means it's 'Rhyme Tyme'! Let's all get ready to sing in out 'Song Circle'!"
With that, the students all cheered at the announcement, causing them to quickly and playfully strip their clothes off, throwing them about the room and revealing their new adolescent femboi bodies.
As it was implied, Ms. Murines and the children formed a circle with their naked bodies before gently sticking their cute cocks into the bubble butt in front of them, creating a young fuck train, their mousey ears twitched and giggles came from each mouth when each finally made contact hip to hip and balls to balls.
When it was clear everyone was situated, Ms. Mirunes said, "Okay children~ Ready~?"
All the kids gave their best human-like mouse squeak in confirmation before starting their "Rhyme Tyme"
"Hickory Dickory Dock!
The mouse sat on the cock!
The cock came once!
The mouse got bunce!
Hickory Dickory Dock!"
As they sang, their faces began to push outwards into short muzzles and their noses shrinking into cute pink mouse noses. They also moved in perfect rhythmic sync, pumping into each other on the beat exactly.
"Hickory Dickory Dock!
The mouse sat on the cock!
The cock came twice!
The mouse felt nice!
Hickory Dickory Dock!"
While the first verse made all of their cute cocks hard, the second one showed an unseen effect as they all shot pre cleanly into their asses, making all of their holes wet and lubricated, making them all the more horny. The cascade seemed to take advantage of this as well, as a bump above every asscrack appeared before Ms. Murines and her class all simultaneously grew hairless tails much like mice.
"Hickory Dickory Dock!
The mouse sat on the cock!
The cock came thrice!
A mouse's delight!
Hickory Dickory Dock!"
And as they finished the final verse, they all came into each other, their voices pitching up like helium as they moaned adorably into air and each other's growing girly hair. As they concluded, they all fell to the padded ground, giggling like the adolescent femboi mice they were, not caring that their cum was leaking from their bubble butts and cute cocks onto the floor.
"Wonderful singing children~! Ms. Murines is so proud of all of you~! Now let's not leave a mess and clean each other up~!"
With that, the mouse children began cleaning each other by licking up the cum off their dicks and asses, with Ms. Murines helping out the most and giving each of her students a reward of a French kissing and a gold star sticker on their butt cheeks.